Detailed analysis in November MR▸ .
Did the DfT» bring NR» into the mix when specifying the IET▸ ?
No need. There's a standard procedure, involving NR maintaining lists of track-based equipment, frequencies to protect,
EMC▸ levels, places it is used, etc., vice versa, etc., etc. But predicting levels of EMI in the real world can be tricky, especially with a new design of
OLE▸ and train as you can't go and measure either half of the puzzle.
I also wonder whether you get conversations like:
(train) That's going to be hard to meet, now - trains are different from 40 years ago so your track won't have seen this stuff. We suspect you've never tried to to filter our frequencies out - will you have a look at adding that?
(track) Yes, but we aren't going to do a lot as the kit's due to be replaced fairly soon.
(train) In that case, can't you bring that forward to before our trains come into use?
(track) OK, I guess so. (produces a typical NR promised final milestone date).
Or some variant of that. Of course you would expect any small modifications already added to the
GWR▸ trains to have been put into the ones testing on the
ECML▸ , wouldn't you?